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All About Linux: An Interview with Jeff Dike--The Creator of User Mode Linux

Jun 12, 2006, 21:00 (2 Talkback[s])

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[ Thanks to An Anonymous Reader for this link. ]

"Question: There are a lot of virtualization technologies like VMware, Xen and QEMU other than UML. What are the relative strengths of UML which would urge a person in choosing it over its counterparts?

"Jeff Dike: The reason varies according to the technology that you're comparing UML to. With qemu and other instruction emulators, the attraction is speed. These let you boot a kernel on a machine with a different architecture, i.e. a ppc kernel on an i386 host. When the architecture of the virtual machine is the same as the host, there are few reasons to take the overhead of instruction emulation, even if the emulator is optimized in this case to just virtualize instructions..."

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